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Physics

Why quantum mechanics says the past isn’t real

The famous double-slit experiment brings into question the very nature of matter. Its cousin, the quantum eraser experiment, makes us question the very existence of time – and how much we can manipulate it

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An artwork made my layering many paper cutouts, showing an astronaut near a black hole. Within the black hole are colourful swirls, stars and specks

Physics

Black hole entropy hints at a surprising truth about our universe

Features

A new understanding of causality could fix quantum theory’s fatal flaw

Physics

A new understanding of causality could fix quantum theory’s fatal flaw

Features

Yonathan Cohen at Quantum Machines speaking at AQC25 conference

Technology

Quantum computers need classical computing to be truly useful

Analysis

Quantum computer core. Light rays passing through the nanoscale crystal core of a quantum computer. Quantum computers, which are under development, are based on quantum mechanics and the principle of representing information in quantum bits (qubits) using quantum properties. This could involve optical properties of chemically doped crystals, like the one shown here. Quantum computing has the potential to massively increase computing power.

Physics

An ambitious look at quantum physics is fun – but overdoes it a little

Culture

Technology

Quantum computers that recycle their qubits can limit errors

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Physics

The forgotten women of quantum physics

Comment

Technology

IBM has unveiled two unprecedentedly complex quantum computers

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Technology

New quantum computer is on the path to unravelling superconductivity

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Vlatko Vedral

Video

Quantum numbers are the true essence of reality, says Vlatko Vedral

No particles, no space, no time. What, then, is reality made of? asks quantum physicist Vlatko Vedral

Video

Space

Lumpy ‘caterpillar wormholes’ may connect entangled black holes

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Technology

Advanced quantum network could be a prototype for the quantum internet

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Physics

Quantum computers reveal that the wave function is a real thing

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Physics

Quantum-inspired algorithm could help reveal hidden cosmic objects

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